Concrete anchor

Details Concrete anchor Concrete anchor

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 13/08 (2006.01) E21D 20/00 (2006.01) E21D 21/00 (2006.01) F16B 13/06 (2006.01)

Patent

CA 2458701

An expansion anchor comprises a stud having threads including a root, a land, and a taper extending between the root and the land and a helical member having a leading edge threadingly engageable with the threads, wherein the helical member is movable between an unexpanded position and an expanded position, wherein in the expanded position the leading edge is forced radially outwardly by the land. In one embodiment, the helical member includes a finger extending in a leading direction. A method also is disclosed for anchoring the inventive stud within a hole in a substrate by expanding the helical member until the leading edge is wedged between the land and a wall of the hole.

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